EP 0031436 A3 19810715 - A METHOD FOR SPLITTING SILOXANES
Title (en)
A METHOD FOR SPLITTING SILOXANES
Publication
Application
Priority
DE 2950030 A 19791213
Abstract (en)
[origin: ES8200698A1] A process for the preparation of a halogen silane and an aromatic compound having at least one -C=O- of < IMAGE > group, while simultaneously effecting cleavage of a siloxane by contacting a compound having at least one aromatically bound mono and/or dihalogen methylene group or an aromatic compound having a mono-, di and or trihalogen methyl group of the formula < IMAGE > wherein the aromatic moiety can be optionally otherwise substituted, with a siloxane of the formula < IMAGE > wherein each R moiety is independently selected from the group consisting of halogen, alkyl, alkenyl and O-SiR3, wherein such R moiety is halogen, alkyl or alkenyl, wherein at least two of the R moieties can, together with the silicon atom to which they are attached, form a ring, at an elevated temperature in the presence of a catalytic amount of a metal or a metal compound, which metal is of the sub-group of elements or of the 5th principal group of the periodic system of the elements, together with a proton donor, or in the presence of a catalytic amount of an oxygen acid.
IPC 1-7
C07C 51/58; C07C 45/00; C07C 41/00; C07F 7/12; C07C 51/54; C07D 307/88; C07D 307/89; C07C 47/54; C07C 47/55; C07C 63/10; C07C 63/15
IPC 8 full level
C07C 41/01 (2006.01); B01J 27/00 (2006.01); B01J 29/00 (2006.01); B01J 31/00 (2006.01); C01B 33/107 (2006.01); C07C 41/00 (2006.01); C07C 45/00 (2006.01); C07C 45/30 (2006.01); C07C 45/43 (2006.01); C07C 47/54 (2006.01); C07C 47/55 (2006.01); C07C 51/00 (2006.01); C07C 51/54 (2006.01); C07C 51/58 (2006.01); C07C 63/10 (2006.01); C07C 63/15 (2006.01); C07C 67/00 (2006.01); C07D 307/88 (2006.01); C07D 307/89 (2006.01); C07F 7/12 (2006.01)
CPC (source: EP US)
C01B 33/1071 (2013.01 - EP US); C07C 45/43 (2013.01 - EP US); C07C 51/58 (2013.01 - EP US); C07D 307/88 (2013.01 - EP US); C07D 307/89 (2013.01 - EP US); C07F 7/123 (2013.01 - EP US)
Citation (search report)
- [X] JOURNAL OF THE CHEMICAL SOCIETY, CHEMICAL COMMUNICATIONS, Nr. 1, 5 Januar 1977, London, T. NAKANO et al. "Convenient Synthesis of Aromatic Acid Chlorides. The Reaction of Benzylidyne Chlorides with Hexamethyldisiloxane" Seiten 808 bis 809.
- [A] CHEMICAL ABSTRACTS Band 45, Nr. 13, 10 Juli 1951 Columbus, Ohio, USA BRITISH THOMSON-HOUSTON CO. LTD. "Organo-substituted halosilanes" Seite 1951, Spalte 5714a & GB - A - 645 103.
Designated contracting state (EPC)
AT BE CH DE FR GB IT LU NL SE
DOCDB simple family (publication)
EP 0031436 A2 19810708; EP 0031436 A3 19810715; EP 0031436 B1 19840215; AT E6247 T1 19840315; CA 1162382 A 19840221; DE 2950030 A1 19810716; DE 3066641 D1 19840322; ES 497658 A0 19811101; ES 8200698 A1 19811101; JP S56100129 A 19810811; US 4310680 A 19820112
DOCDB simple family (application)
EP 80107093 A 19801115; AT 80107093 T 19801115; CA 366655 A 19801212; DE 2950030 A 19791213; DE 3066641 T 19801115; ES 497658 A 19801212; JP 17479180 A 19801212; US 21548880 A 19801211